NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

31 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 657
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 30
BANDWIDTH.COM CLEC, LLC - CA 1
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2022-08-10 657-614-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2022-08-10 657-614-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2022-08-10 657-614-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2022-08-10 657-614-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2022-08-10 657-614-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2022-08-10 657-614-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2022-08-10 657-614-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2022-08-08 657-530-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F BREA CA
2022-08-08 657-612-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F GARDEN GRV CA
2022-07-29 657-837-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F BUENA PARK CA
2022-07-27 657-310-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SILVERADO CA
2022-07-27 657-530-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C BREA CA
2022-07-27 657-530-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C BREA CA
2022-07-27 657-571-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C YORBALINDA CA
2022-07-27 657-571-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C YORBALINDA CA
2022-07-27 657-571-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C YORBALINDA CA
2022-07-27 657-571-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C YORBALINDA CA
2022-07-27 657-571-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C YORBALINDA CA
2022-07-27 657-571-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C YORBALINDA CA
2022-07-27 657-837-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C BUENA PARK CA
2022-07-27 657-837-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C BUENA PARK CA
2022-07-27 657-837-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C BUENA PARK CA
2022-07-27 657-837-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C BUENA PARK CA
2022-07-27 657-837-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C BUENA PARK CA
2022-07-27 657-837-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C BUENA PARK CA
2022-07-26 657-613-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CYPRESS CA
2022-07-26 657-613-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CYPRESS CA
2022-07-25 657-298-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CYPRESS CA
2022-07-25 657-608-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ORANGE CA
2022-07-25 657-608-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ORANGE CA
2022-07-25 657-608-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ORANGE CA
2022-07-22 657-612-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GARDEN GRV CA
2022-07-21 657-609-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2022-07-21 657-609-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2022-07-21 657-609-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2022-07-21 657-609-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2022-07-21 657-609-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2022-07-21 657-609-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2022-07-21 657-609-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2022-07-21 657-609-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2022-07-21 657-609-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2022-07-21 657-609-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2022-07-21 657-610-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SANTA ANA CA
2022-07-21 657-610-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SANTA ANA CA
2022-07-21 657-610-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SANTA ANA CA
2022-07-21 657-610-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SANTA ANA CA
2022-07-18 657-607-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2022-07-18 657-607-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2022-07-18 657-607-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2022-07-18 657-607-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.